Hy-Drive
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Hy-Drive
The Hy-Drive was a Chrysler Corporation semi-automatic transmission introduced in 1953 in US-market Plymouths. It was a hybrid manual transmission equipped with a torque converter, like an automatic. Although ''Hy-Drive'' cars had a clutch pedal like a traditional manual transmission, it was only used to put the car in gear. Once underway, the driver could upshift and downshift using the gear shift without using the clutch or even lifting off the accelerator. The industry was caught by surprise by the advent of the automatic transmission in the early-to-late-1940s. General Motors' ''Dynaflow'', introduced by Buick in 1948,Flory, p. 1017. was a smash hit with the public, very soon being fitted in over 80% of new Buicks. (GM's fully automatic Hydramatic, which debuted in 1939, was in 70% of Pontiacs that year.) Chrysler had previously offered a Fluid Drive fluid coupling (not a torque converter, as it did not multiply the torque) on their manual transmissions, and the ''Hy-Drive'' wa ...
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Semi-automatic Transmission
A semi-automatic transmission is a "theoretical" multiple-speed transmission where part of its operation is automated (typically the actuation of the clutch), but the driver's input would be required to launch the vehicle from a standstill and to manually change gears. Semi-automatic transmissions were exclusively used in motorcycles and are based on conventional manual transmissions or sequential manual transmissions, but use an automatic clutch system. But some semi-automatic transmissions have also been based on standard hydraulic automatic transmissions with torque converters and planetary gearsets. Names for specific types of semi-automatic transmissions include ''clutchless manual'', ''auto-manual'', ''auto-clutch manual'', and ''paddle-shift'' transmissions. These systems facilitate gear shifts for the driver by operating the clutch system automatically, usually via switches that trigger an actuator or servo, while still requiring the driver to manually shift gears. This ...
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Presto-Matic
The M6 Presto-Matic was a Chrysler Corporation semi-automatic transmission produced from 1946–1953. It was a special manual transmission with a fluid coupling. Although it had just two forward gears, an electric overdrive unit was attached and useful in either gear for a total of four forward speeds. The driver would use the clutch pedal any time when selecting low, high, or reverse gear. Once underway, the accelerator could be eased and the car would engage the overdrive. With the Fluid Drive coupling, the car could be brought to a halt in gear without releasing the clutch and would creep like an automatic. The Presto-Matic name was only used on Chrysler-brand cars. DeSoto called the transmission the Tip-Toe Shift, while Dodge used Gyro-Matic, Fluid-Matic, Fluidtorque, or Gyro-Torque. Chrysler and DeSoto sold the unit from 1946–1953, while Dodge did not introduce it until 1948. Plymouth introduced their ''Hy-Drive'' semi-automatic in 1953, but all were replaced by the ''Pow ...
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PowerFlite
PowerFlite is a two-speed automatic transmission engineered and produced by the Chrysler Corporation and used in their passenger cars from 1954 to 1961. Production began in late 1953 and the simple and durable PowerFlite remained available on Plymouths and Dodges through the 1961 model year. Background Chrysler was the last of Detroit's Big Three automobile manufacturers, Big Three automakers to introduce a fully automatic transmission, some 14 years after General Motors Corporation, General Motors had introduced Oldsmobile's Hydramatic automatic transmission and nearly three years after Ford Motor Company, Ford's Ford-O-Matic. Packard's Ultramatic debuted in 1949, and Studebaker's Automatic Drive was introduced in 1950. The PowerFlite was lighter and simple in its construction and operation, with fewer parts than competing transmissions. It was also durable, being used behind every Chrysler Corporation engine from the Plymouth automobile, Plymouth Six to the Imperial (automob ...
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Semi-automatic Transmission
A semi-automatic transmission is a "theoretical" multiple-speed transmission where part of its operation is automated (typically the actuation of the clutch), but the driver's input would be required to launch the vehicle from a standstill and to manually change gears. Semi-automatic transmissions were exclusively used in motorcycles and are based on conventional manual transmissions or sequential manual transmissions, but use an automatic clutch system. But some semi-automatic transmissions have also been based on standard hydraulic automatic transmissions with torque converters and planetary gearsets. Names for specific types of semi-automatic transmissions include ''clutchless manual'', ''auto-manual'', ''auto-clutch manual'', and ''paddle-shift'' transmissions. These systems facilitate gear shifts for the driver by operating the clutch system automatically, usually via switches that trigger an actuator or servo, while still requiring the driver to manually shift gears. This ...
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Plymouth (automobile)
Plymouth was a brand of automobiles produced by Chrysler, Chrysler Corporation and its successor Mercedes-Benz Group, DaimlerChrysler. The brand was launched in 1928 to compete in what was then described as the "low-priced" market segment that was dominated by Chevrolet and Ford Motor Company, Ford. It became a high-volume seller for the automaker until the late 1990s. Plymouth cars were marketed primarily in the United States. The brand was withdrawn from the marketplace in 2001. The Plymouth models that were produced up to then were either discontinued or rebranded as Chrysler or Dodge. History Origins The Plymouth automobile was introduced at Madison Square Garden (1925), Madison Square Garden on July 7, 1928. It was Chrysler Corporation's first entry in the low-priced field previously dominated by Chevrolet and Ford. Plymouths were initially priced higher than the competition, but offered standard features such as internal expanding hydraulic brakes that Ford and Chevrol ...
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List Of Chrysler Transmissions
Chrysler produces a number of automobile transmissions in-house. Semi-automatic * 1941–1942 M4 Vacamatic — 4-speed (2-range manual control with automatic 2-speed shift vacuum operated) with clutch and fluid coupling (Fluid Drive); also known as Simplimatic, Powermatic * 1946–1953 M5/M6 Presto-Matic — 4-speed (2 gear manual with electric overdrive) with clutch and fluid coupling (Fluid Drive) or torque converter (Fluid Torque Drive); also known as Tip-Toe Shift, Gyro-Matic, Fluid-Matic, Gyro-Torque * 1953–1954 Hy-Drive — 3-speed manual transmission behind a torque converter Automatic * 1954–1961 PowerFlite — 2-speed automatic * 1956–2007 TorqueFlite ** 1956–1961 A466 — 3-speed automatic ** 1962–1994 A727 (36RH/37RH) — 3-speed automatic ** 1960–2002 A904 (30RH) — 3-speed automatic ** A998 (31RH) — 3-speed automatic ** A999 (32RH) — 3-speed automatic ** 1988–2004 A500 (4 ...
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Chrysler Corporation
Stellantis North America (officially FCA US and formerly Chrysler ()) is one of the " Big Three" automobile manufacturers in the United States, headquartered in Auburn Hills, Michigan. It is the American subsidiary of the multinational automotive company Stellantis. In addition to the Chrysler brand, Stellantis North America sells vehicles worldwide under the Dodge, Jeep, and Ram nameplates. It also includes Mopar, its automotive parts and accessories division, and SRT, its performance automobile division. The original Chrysler Corporation was founded in 1925 by Walter Chrysler from the remains of the Maxwell Motor Company. It was acquired by Daimler-Benz, which in 1998 renamed itself DaimlerChrysler. After Daimler divested Chrysler in 2007, the company operated as Chrysler LLC (2007–2009) and Chrysler Group LLC (2009–2014) before being acquired by Fiat S.p.A. and becoming a subsidiary of the newly formed Fiat Chrysler Automobiles ("FCA") in 2014. Chrysler in 2021 is a ...
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Manual Transmission
A manual transmission (MT), also known as manual gearbox, standard transmission (in Canada, the United Kingdom, and the United States), or stick shift (in the United States), is a multi-speed motor vehicle transmission (mechanics), transmission system, where gear changes require the driver to manually select the gears by operating a gear stick and clutch (which is usually a foot pedal for cars or a hand lever for motorcycles). Early automobiles used ''sliding-mesh'' manual transmissions with up to three forward gear ratios. Since the 1950s, ''constant-mesh'' manual transmissions have become increasingly commonplace and the number of forward ratios has increased to 5-speed and 6-speed manual transmissions for current vehicles. The alternative to a manual transmission is an automatic transmission; common types of automatic transmissions are the Automatic transmission#Hydraulic automatic transmissions, hydraulic automatic transmission (AT), and the continuously variable transmissio ...
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Torque Converter
A torque converter is a type of fluid coupling that transfers rotating power from a prime mover, like an internal combustion engine, to a rotating driven load. In a vehicle with an automatic transmission, the torque converter connects the power source to the load. It is usually located between the engine's flexplate and the transmission. The equivalent location in a manual transmission would be the mechanical clutch. The main characteristic of a torque converter is its ability to increase torque when the output rotational speed is so low that it allows the fluid coming off the curved vanes of the turbine to be deflected off the stator while it is locked against its one-way clutch, thus providing the equivalent of a reduction gear. This is a feature beyond that of the simple fluid coupling, which can match rotational speed but does not multiply torque and thus reduces power. Hydraulic systems By far the most common form of torque converter in automobile transmissions is the hydr ...
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Fluid Drive
Fluid Drive is the trademarked name that Chrysler Corporation assigned to a transmission driveline combination which replaced the flywheel with a hydraulic coupling and performed the same function as a modern torque converter, only without torque multiplication. A conventional clutch and three- or four-speed manual transmission was installed behind the fluid coupling. Fluid drive was used in many military vehicles produced for the US Armed Forces during the Second World War. It was offered for civilian use from 1939 through 1953 in Chryslers, 1940 through 1953 in DeSotos, and from 1941 through 1954 in Dodge models; a semi-automatic system was optional from Chrysler and Desoto from 1941, and for Dodge from 1949. History The fluid coupling and torque converter was invented by the German engineer Foettinger in the early 1900s. For non-marine applications he licensed the development of the fluid coupling to the British engineer Harold Sinclair and his Fluidrive Engineering Co Ltd (n ...
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General Motors Corporation
The General Motors Company (GM) is an American Multinational corporation, multinational Automotive industry, automotive manufacturing company headquartered in Detroit, Michigan, United States. It is the largest automaker in the United States and was the largest in the world for 77 years before losing the top spot to Toyota in 2008. General Motors operates manufacturing plants in eight countries. Its four core automobile brands are Chevrolet, Buick, GMC (automobile), GMC, and Cadillac. It also holds interests in Chinese brands Wuling Motors and Baojun as well as DMAX (engines), DMAX via joint ventures. Additionally, GM also owns the BrightDrop delivery vehicle manufacturer, GM Defense, a namesake Defense vehicles division which produces military vehicles for the United States government and military; the vehicle safety, security, and information services provider OnStar; the auto parts company ACDelco, a GM Financial, namesake financial lending service; and majority ownership in t ...
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Dynaflow
Dynaflow was the trademarked name for a type of automatic transmission developed and built by General Motors Buick Motor Division from late 1947 to mid-1963. The Dynaflow, which was introduced for the 1948 model year only as an option on Roadmaster models, received some severe early testing in the M18 Hellcat tank destroyer, which were built in Buick's Flint Assembly plant during World War II. It was also used in the 1951 Le Sabre concept car. History Original version The Dynaflow was an automatic transmission used in various forms in Buick cars by the General Motors Corporation from 1947 until 1963. The transmission initially used a five-element torque converter, with two turbines and two stators, as well as a planetary gearset that provided two forward speeds plus reverse. In normal driving, Dynaflow started in high gear (direct drive), relying on the converter's 3.1:1 torque multiplication, Ref. 1963 Buick Service Manual to accelerate the vehicle. Low gear, obtained via th ...
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